package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;


import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
* @Description: 菜品管理
        * @Param: 
        * @return: 
        * @Author: Lei
        * @Date: 
 */

@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;
    
    @Autowired
    private CategoryService categoryService;

    @Autowired
    private RedisTemplate redisTemplate;
    
    
    /**
    * @Description: 新增菜品
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
    @PostMapping
    public R<String> saveDish(@RequestBody DishDto dishDto){

        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);


        /**清理所有菜品的缓存数据*/
//        Set keys = redisTemplate.keys("dish_*");
//        redisTemplate.delete(keys);
        /**清理某个分类下的菜品缓存*/
        String key="dish_"+dishDto.getCategoryId()+"_1";
        redisTemplate.delete(key);

        return R.success("新增菜品成功");
    }


    /**
    * @Description: 菜品信息分页
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        /**构造分页构造器对象*/
        Page<Dish> pageInfo=new Page<>(page,pageSize);

        Page<DishDto> dishDtoPage=new Page<>();
        /**构造条件构造器对象*/
        LambdaQueryWrapper<Dish> lambdaQueryWrapper=new LambdaQueryWrapper<>();
        /**添加过滤条件*/
        lambdaQueryWrapper.like(name!=null,Dish::getName,name);
        lambdaQueryWrapper.orderByDesc(Dish::getUpdateTime);


        /**执行分页查询*/
        dishService.page(pageInfo,lambdaQueryWrapper);


        /**对象拷贝*/
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list=records.stream().map((item)->{
            DishDto dishDto=new DishDto();

            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            /**根据id查询分类对象*/
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
    * @Description: 根据id查询菜品信息和对应的口味信息
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
    @GetMapping("/{id}")
    public R<DishDto> getDishById(@PathVariable Long id){

        DishDto dishDto = dishService.getByIdWithFlavor(id);


        return R.success(dishDto);
    }



    /**
    * @Description: 修改菜品信息
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
    @PutMapping
    public R<String> updateDish(@RequestBody DishDto dishDto){

        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);


        /**清理所有菜品的缓存数据*/
//        Set keys = redisTemplate.keys("dish_*");
//        redisTemplate.delete(keys);
        /**清理某个分类下的菜品缓存*/
        String key="dish_"+dishDto.getCategoryId()+"_1";
        redisTemplate.delete(key);
        return R.success("修改菜品信息成功");
    }

    @PostMapping("/status/{ids}")
    public R<String> updateDishStatus(@RequestParam Long ids){
        log.info(ids.toString());
//        int status=status_ids.charAt(0);
        Dish dish = dishService.getById(ids);
        if (dish.getStatus() == 0) {
            dish.setStatus(1);
        }else{
            dish.setStatus(0);
        }
        dishService.updateById(dish);
        /**清理所有菜品的缓存数据*/
//        Set keys = redisTemplate.keys("dish_*");
//        redisTemplate.delete(keys);
        /**清理某个分类下的菜品缓存*/
        String key="dish_"+dish.getCategoryId()+"_1";
        redisTemplate.delete(key);
        return R.success("菜品状态修改成功");
    }


    @DeleteMapping
    public R<String> deleteDish(@RequestParam Long ids){
        log.info(ids.toString());
        Dish dish = dishService.getById(ids);
        if (dish.getIsDeleted() == 0) {
            dish.setIsDeleted(1);
        }else {
            dish.setIsDeleted(0);
        }
        dishService.updateById(dish);
        return R.success("菜品删除成功");
    }

    
    /**
    * @Description: 根据条件查询对应的菜品数据
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
//    @GetMapping("/list")
//    public R<List<Dish>> listDish( Dish dish){
//        log.info(dish.toString());
//        /**构造查询条件*/
//        LambdaQueryWrapper<Dish> lambdaQueryWrapper=new LambdaQueryWrapper<>();
//        lambdaQueryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
//        /**查询状态为1（起售状态）的菜品*/
//        lambdaQueryWrapper.eq(Dish::getStatus,1);
//        /**添加排序条件*/
//        lambdaQueryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//
//        List<Dish> list = dishService.list(lambdaQueryWrapper);
//
//
//        return R.success(list);
//    }
    @GetMapping("/list")
    public R<List<DishDto>> listDish( Dish dish){
        log.info(dish.toString());

        List<DishDto> dishDtoList=null;


        /**动态构造key*/
        String dishKey="dish_"+dish.getCategoryId()+"_"+dish.getStatus();

        /**先从redis中获取缓存数据*/
        dishDtoList= (List<DishDto>) redisTemplate.opsForValue().get(dishKey);

        if(dishDtoList!=null){
            /**如果存在，直接返回，无需查询数据库*/
            return R.success(dishDtoList);
        }



        /**构造查询条件*/
        LambdaQueryWrapper<Dish> lambdaQueryWrapper=new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        /**查询状态为1（起售状态）的菜品*/
        lambdaQueryWrapper.eq(Dish::getStatus,1);
        /**添加排序条件*/
        lambdaQueryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(lambdaQueryWrapper);

        dishDtoList=list.stream().map((item)->{
           DishDto dishDto=new DishDto();

           BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> queryWrapper=new LambdaQueryWrapper<>();
            queryWrapper.eq(DishFlavor::getDishId,dishId);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(queryWrapper);
            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());

        /**如果不存在，需要查询数据库，将查询到的菜品数据缓存到redis*/
        redisTemplate.opsForValue().set(dishKey,dishDtoList,60, TimeUnit.MINUTES);

        return R.success(dishDtoList);
    }
}
